Engine construction



May 22. 1928.

.r, 9 9 lmn v m Q m m 1 J m I III/27a 11 C E BONNER ETAL ENGINE CONSTRUCTION Filed May 1921 Patented May 22, 1928.

UNITED STATES PATENTOFFICE.

CLARENCEE. BONNER AND JOHN W. MAUGHMER, OF NEW YORK, N. Y., ASSIGNORS,

BY MESNE ASSIGNMENTS, TO BONNER-CHARTER CORPORATION, OF DOVER, DELA- WARE, A CORPORATION OF DELAWARE.

ENGINE CONSTRUCTION.

. Application filed May 4,

This invention relates to a new and improved engine construction, and more par t-icularly to a cylinder and cylinder head construction adapted for use. in connection with internal combustion engines.

In such engines it is highly desirable that the cylinder, and head be as simple in design as possible in order that it may be economically manufactured. It is also highly desirable for efiiciency in machining that the cylinder be open at both ends, since 111 this case the finishing tool may be supported at both ends. The cylinder being made as a simple sleeve may be readily for1ned either of cast iron pipe with a flange casting out upon the end to retain it in place in the cylinder block; or it may be formed of a steel tube with the flange formed thereon in any desired manner.

The use of a readily removable element as a cylinder and one made of steel is particularly desirable in localities where dust is liable to be drawn in through the carburetor with the charge and to score the engine cylinder. For ease in dismantling or as-- sembly of the engine, it is highly desirable that the cylinder be removable from above,

and to simplify this removalit is desirable that the cylinder be removable as a'unit with the cylinder head. When such units are made, however, as separate elements, it ,is essential that the meeting surfaces and method of connection be such as to eliminate any possibility of ower losses.

It is an object o the present invention to provide a cylinder construction comprising a simple tubular inner cylinder and a cyl inder head adapted to be associated therei with, and connected thereto in such manner as to enable these two elements to be mounted and dismounted as a unit. p

It is a further object to provide devices of this character which are simple in design and relatively inexpensive in manufacture. Other and further objects'will appear as the description proceeds.

Broadly, our invention comprises an engine consisting of a cylinder block having cylinder cavities open at the top and for each cylinder cavity a tubular inner cylinder adapted to fit therein and be guided by the block. It further includes a separate head for each cylinder adapted to engage the block and the upper end of the 1921. Serial No. 466,796.

cylinder. The cylinder is preferably provided with a flange at its upperend engag ing the cylinder block and the cylinder head, and connecting screws are passed through the flange into the head to positively connect.

the two members. The cylinder head and cylinder are then connected as a unit to the cylinderblock by means of bolts extending from the block through the head and nuts fitting on said bolts.

\Ve have illustratedapreferred embodiment of our invention in the accompanying drawing, in which-- I Figure 1 is a cross sectional view of the upper portion of an engine cylinder fitted with our invention; and

provided with an outlet 12 and its central portion 13 is provided with the cylindrical extension 1.4 extending downwardly into the upper end of the cylinder member 6. The water jacket extends downwardly into this portion 14 and the spark plug 15 is threaded into the cap and extends through its lower portion. The cylinder head is retained in place upon the cylinder block by the bolts 16 and nuts 17. The upwardly extending screws 18 and 19 extend through the flange 7 of the cylinder and into the cylinder head 11. These screws ar countersunk in the cylinder flange.

As shown in the drawing, a sleeve valve member 20 is fitted in .the cavity 4 between the cylinder block and the cylinder member. It forms no part of the present invention, however, and will not be further described herein. f

It will be observed that the screws connecting the cylinder and cylinder head are incapable of adjustment or removal when the cylinder and head are assembled in the cylinder block. By removal of the nuts 17 the cylinder head and cylinder member are cast integrally; and on the otl1el he fitl it gives very great "advantages as to the. ease,

and a eylinde'r ne d Mammy med a} to sttid cylindermelhber to "fol-hie galls tight connection therewith.

A 2. In an mtern-ul combustrenceng:ne areyl' of casting "of the head add in m eehlning" and finishing boththe head and the cylinde i; whi h a f r h eded? be hest, u E y The fidvgifltaggg at the unitary str cture are present; since the head lS C'lJQ YQly fitted 1n the cylinder add due to its enhular engagement th'efrtzxtitlY-tifi engagement both the inner surfzicts ml the "to'ifij flange-am danger of lealdi gefi s resent; istrue? since the nltd re "of the "iheeth'l'g surfaces readily Mn-m adapts them for aceurate machlnlng. On

tlie othel lillhidjlisj has been stilited, the censtnic'tieh in two parts e pme ieqt rey r fumierg d vantegeimam th fact thatone I cf lihtler nmy he itsed interchange-(111w 1 with" difi'erent heeds In {hie We hendshmfmg different bittefisidhs'ihto the cyhnd'er of diffi mg'lh ths, be nsedf withoutfurther mei rtherehange than the 10wcampressibn gjm with a head eit ndih'g well in'tofthe cylinder; it provides thigh: ,cmnjn-essmn eng lne for lilgh speed use.

Our constrnetien isfsiinp'le Tdesign'zind may reachly"gnennfactnred and installed at relfitlfelydlowjcost. It is efleetl've in op'e'rrent eylinderhea'ds, mey be itdixljteddfor Qener'aluse orfivitli moderate. compression; for Slow heavy-duty iisewith v s o b'er-bezng openetrts upperend and adapted to lfewfe :rq linder heed fitted to, siid 'upfu'er" 1 end; sz'xid cylinder head having a portion" fittin glnto said ,c j lixideri r'nexhluer any pl'eno The en'glne,

: Qdeeirrsflhis cvlin'der bloclge cylinder nielnber removebly tinder blot-lee tubular eylindermemher fitted 5:; rthereinya cylinder headwzrhtaehed to. the: cyl

inder, member to make a gas tight connection A the'rexritllysahl cylinder member and head being adapted to be attached or removed from the'eylihtlerhloek as afunit, and means 60 to detaehab ly retain said unit in the cylinderbloelzf 3. Ina1r intmu1eombustion edgin a eylinder block; a tubular cylinder ihernbeefittfed therein; :1 cylinder ll e'adwittffc hed to the cyl of; r

inder lnen'rher n feenseon'mletely inclos'scd when the cylinder member and head m-e=t-:.- s

senibled in the "block, jsaid. eylinder 'member and heed being adz'qdtecllto be 'attael'led' or rename from the "cylinc'ler block :is a: f 'u nit, 7Q andmeahs te: detuchairhly retainsziid unitin the cylifidefbloek. f t

' 4. In an iilternhl con'lhnstion engine, Mylinder block zfituljiilar cylinder member fitted therein, s'fiange upon said eylindernlem- 76 her, a cylinder headatteehml to the' cylinder niemljer' flange by srrews pas ing through the mega iild wiirdly" into the head, said eyl-' mder member nndheed bgin nda ted'm be attached to or remoY edTf ronr the cylinders mack :emu'i1it,ant1"bone assin through the head to retaih sultl'unit upon the cyl-" inderblock. 1 r

*5. "In an internal eonlb utionengined cylinder bloelghi cylinder member adapted to ss be 'ilssoeilite'd therewitlf, said cylinder in'cm fer-red dis'tirntdthe eylinderh'eiicl and cylinder membmbeing detaclmbly-conneeted m. each other whereby they they be rex'nd ve d as 1 e. *n-hit from the cylinder-b'lOek.

Signed at Long Island, City, borough of n5 22nd any detail-31,1921. v CLARENCE E. BONNET.

f A} JOHN W; MAUGI-IMER. 

